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authorChristian Lamparter <chunkeey@gmail.com>2019-02-14 19:06:47 +0100
committerChristian Lamparter <chunkeey@gmail.com>2019-02-20 18:51:19 +0100
commita69e101ed1169f562fc030a783cd997d3f066b16 (patch)
tree1d7fb563eec0f10473c72abccc608de7274ff9ff /target/linux
parent0b373bf4d6a1a7a53e06946972ebb812b4cc2f0f (diff)
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ipq40xx: speed up ath10k-caldata extraction
Reading and writing to and from flash storage is slow and currently, the ath10kcal_extract() scripts are even more at an disadvantage because they use a block size of 1 to be able skip. This patch reworks the extraction scripts to be much faster and efficient by reading and writing the calibration data in possibly one big block. before: (Tested on a RT-AC58U, which has SPI-NAND). # time dd if=/dev/ubi0_1 of=/lib/firmware/... bs=1 skip=4096 count=12064 12064+0 records in 12064+0 records out real 0m 0.28s user 0m 0.02s sys 0m 0.24s after: # time dd if=/dev/ubi0_1 of=/lib/firmware/... bs=12064 skip=4096 count=1 iflag=skip_bytes 1+0 records in 1+0 records out real 0m 0.01s user 0m 0.00s sys 0m 0.00s Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Diffstat (limited to 'target/linux')
-rw-r--r--target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata4
1 files changed, 2 insertions, 2 deletions
diff --git a/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata b/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
index 59a809e792..21d9063fd4 100644
--- a/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
+++ b/target/linux/ipq40xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
@@ -31,7 +31,7 @@ ath10kcal_extract() {
[ -n "$mtd" ] || \
ath10kcal_die "no mtd device found for partition $part"
- dd if=$mtd of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
+ dd if=$mtd of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
ath10kcal_die "failed to extract calibration data from $mtd"
}
@@ -49,7 +49,7 @@ ath10kcal_ubi_extract() {
[ -n "$ubi" ] || \
ath10kcal_die "no UBI volume found for $part"
- dd if=/dev/$ubi of=/lib/firmware/$FIRMWARE bs=1 skip=$offset count=$count 2>/dev/null || \
+ dd if=/dev/$ubi of=/lib/firmware/$FIRMWARE iflag=skip_bytes bs=$count skip=$offset count=1 2>/dev/null || \
ath10kcal_die "failed to extract from $ubi"
}